hedley



(No Model.)

E. VE. HEDLEY. SMOKE CONSUMER.

110.317,775. Patented May 12, 1885.

555/555555/ii //i/ N. PETERS, PhMmLihogrnpher. Wnshngium D. (l

UNTTED STATES ATENT linien.

EDVARD E. HEDLEY, OF NEW YORK,.N. Y., ASSIGNOR OF ONEIIALF TO N. C. HEDLEY, OF SAME PLAGE.

SMOKEfCONSUlVlER.

SPECIFICATION forming part of Lettere` Patent No. 317,775, dated May 12, 1885.

Appiication ined october is, 1884. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD E. HEDLEY, of New York, county of New York, State of New York, have invented a new and useful Improvement in Smoke-Consumers; and I declare the following to be a full, clear, and exact description of the same, suchas will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form a part of this specification.

My invention consists of the combinations of devices and appliances hereinafter specitied, and more particularly pointed out in the claims.

In the drawings, Figure l is a section by a horizontal plane of a steam-boiler furnace embodying my invention. Fig. 2 is a vertical section of the same. Fig. 3 represents my de- Fig.

view of the boiler-furnace illustrating my invention. Fig. 7 is an enlarged sectional view of the steam and air connections illustrated by similar letters in Fig. 1.

My invention has for its object to effect a thorough combustion within the furnace and consequent consumption of the smoke.

In carrying out my invention, A represents a boiler-i'u1nace, B its front, and B its side walls.

C represents the tube of my improved combining tube and chamber.

C is the chamber, provided with a slot, c', through which the contents may issue into the furnace.

D is la steam-jet. This steam-jet is made with a shoulder, d, and an inverted conical nozzle, al', so that steam issuing from the contracted orice in the jet expands more and more until it leaves the end of the jet. This gives it a direction at once out toward the sides of the tube C. The size of the steam passage in the jet as far as the shoulder d being the same as the steam-pipe with which it is connected, the body of steam is conveyed 5o intact to the shoulder, and thence injected into `ing and accelerating tube.

the inverted steam-nozzle with more force un- `der a lower pressure than could be otherwise idone with the jet formed without the shoulder. The inverted nozzle allows the steam to expand before leaving the jet, so as to embrace a large quantity of air with a small quantity of steam. The interior of this tube, it will be observed, is wide opposite the end of the jet-tube, so that the issuing steam may gather a large quantity of air and drive the same forward. At c the tube is contracted, so as to serve at this point the purposes of a combin- The chamber C permits the contents to expand and become quite highly heated before they emerge from the slot c'.

C2 is a nipple, whereby the chamber C is connected with the tube C.

D is a supporting bar, preferably of `wrought-iron, cast in the tubes, and designed to sustain the end of the steam-jet.

E is a cap, perforated at e for the free admission of air. The purpose of this cap is to secure the device of the boiler when it is designed for locomotives or similar boilers.

F, Fig. 2, is a steampipe leading from the steam-space of the boiler to a steam-box, F', located in the wall of the furnace, so as to be exposed to the strong heat of the furnace. A pipe, f, leads therefrom to the steam-jet D, and if there be several of these steanrjets the steam-pipe may furnish steam to all said jets. The steam is thus reheated before it is used at the jet.

I would have it understood that the device may be made either with or without this reheating steam-boxF. I prefer, however, especially in stationary boilers, to use thesaid reheater, although in locomotive-boilers I propose to dispense with the steam-box, conveying the steam direct to the jet or jets.

G is a forni of mixing and combining chaniber which I prefer in stationary boilenfurhaces, instead of the chamber G, (shown in Figs. 4 and 5,) although it is substantially the same in principle, .the tube being practically elongated, and a somewhat different shape is given to the chamber. this chamber G with slots g, located at different levels.

I provide I represent two such slots in the roo drawings. The lower one is intended to spread the mixture of air and steam over the bed of fuel close to the latter, while the upper slot is designed to deliver the air and steam at a level some distance above the fuel, in order to combine with and furnish the necessary oxygen to effect a consumption of such products as pass unconsumed through the lower stratum of air and steam.

The air may be taken directly from the exterior and be forced by the steam-jets forward into the furnace, and for ordinary purposes I generally employ the device in that way-as, for instance, upon locomotives; but where it is desired to secure the greatest economy of fuel as well as the consumption of the smoke, I prefer to locate an air-retort, H, in theuptake or in the breeching at the end ofthe boiler, where the air may be thoroughly and highly heated by the products of combustion wh'ich have passed through the boiler and are about to escape into the chimney or stack. H is a pipe leading to the tubes C.

H2 is an air-inlet. Y

This air-box may be made of cast metal or of sheet metal or of boiler-plate, and this feature of providing an air-retort in the breeching or in the uptake for being heated by the waste products of combustion after they leave the boiler and for the purpose of highly heating the air that is to be subsequently thrown into the boiler is an important feature.

In order to change the chamber C (shown in Figs. 4 and 5) to the form of chamber shown at the sides of the furnace in Figs. 1 and 2, itis only necessary to unscrew the chamber C and to screw into its place the long tube or neck shown in Figs. 1 and 2.

I represents athimble,which passes through the watenleg of the boiler shown in Figs. 3 and 4, so as to furnish a free opening for the smoke=consuming device. i

It is apparent that the air-retort H may be employed upon a locomotive-boiler as well as upon astationary boiler, although in the former class of boilers it is frequently of little 'consequence to figure for such close economy in fuel, and the greatest consideration is to effect a thorough consumption, so as to prevent smoke. The air-retort may therefore in such cases be dispensed with.

Having thus described my invention, what I desire to claim is 1. In a smoke-consumer, a combining and accelerating tube, G,provided with an interior steam-j et formed with a shoulder, d, and an inverted conical mouth or nozzle with its contracted end next to said shoulder, whereby the tracted end next to said shoulder, to bring the steam in volume to the contracted end of said nozzle, from whence it will gradually expand till it leaves the nozzle, an embracing air-tube made wide for some distance in front of the steam-jet, a combining and accelerating section,c, and a discharge slot or oriiice, by which steam and air forced through the tube is discharged over the fuel, substantially as described.

3. Tn a smoke-consuming device, the combination of a steam-jet formed with ashoulder, d, and an inverted conical nozzle with its contracted end next to said shoulder, to bring the steam in volume to the contracted end of said nozzle, from whence it will gradually expand till it leaves the nozzle, an embracing air-tube made wide for some distance in front of the steam-jet, an air-retort located within the uptake of the furnace to be heated by the escaping products of combustion, and a pipe connecting said retort with the embracing airtube around the steam-jet, substantially as described.

4'. In a'smoke-consumer, the combination of a steam-jet formed with a shoulder, d, and an inverted conical nozzle with its contracted end next the said shoulder, to'bring the steam in volume. to the contracted end of said nozzle, from whence it will gradually expand till it leaves the nozzle, an air-tube embracing said steam-jet, and a steam-superheating chamber connected with said steam-jet, and through which the steam passes before emerging from the jet, substantially as described.

5. In a smoke-consumer, the combination of a steam-jet formed with a shoulder, d, and inverted nozzle d', with its contracted end next to said shoulder, an air-tube, C, surrounding said jet` and enlarged to a point beyond the end of thejet and then contracted, an expansionchamber, C', having an elongated slot,c, and a nipple, C2, for connecting said expansion-chamber to the tube C, substantially as described.

In testimony whereof I sign this specification in the presence of two witnesses.

EDWARD E. HEDLEY. Witnesses:

N. S. WRIGHT, M. B. ODOGHERTY.

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